Damping element for excavator buckets

ABSTRACT

Embodiments of the invention relate generally to excavating equipment and, more particularly, to a damping element for excavator shovel buckets that improves the protection of its components.

TECHNICAL FIELD

The field of the utility model is developed in the field of elements forexcavator shovels, more specifically, it refers to a damping element toprotect the boom of the excavator shovel from impacts of the bucket.

DESCRIPTION OF THE PRIOR ART

In cable excavator shovels, there is a risk, during operation, that thebucket may impact the shovel boom, causing damage to it, so there is aneed to incorporate a boom protection to avoid direct damage to theshovel. the shovel or the use of a shock absorber that avoids possibledirect hits of the bucket against the boom.

Currently, the industry uses a damping element (A), as can be seen inFIG. 1 , located in the lower part of the boom, in a position in whichthe bucket could impact the boom. The use of said damping element (A)presents operational problems that condition its implementation. In thisregard, its location on the boom represents a high risk for operatorssince the replacement of this element in a mine involves work at height(H) and with a load suspended in an area where, to fix that load, accessmust be obtained from the side. lower or on the side of the boom, sothat the operation cannot be carried out in optimal conditions, whichleads to avoiding the replacement, leaving the excavator bladeunprotected when the damping element (A) wears out. When the shockabsorber element (A) of the excavator shovel is damaged/wears out and isnot replaced, there is no longer any protection against possible impactsof the bucket on the boom, cables and/or drive mechanism (crown crowd),so if it occurs an impact will involve higher repair costs. In thiscase, the replacement operation must necessarily be carried out from thebottom up, lifting the shock-absorbing element (A), making itsinstallation difficult since said element (A) can tilt during theoperation, with the risk of an accident for the operator due to impact.of the damping element (A).

The proposed utility model solves these problems by providing a designin which the replacement of the damping element implies a low risk,being installed in an easily accessible area, so that the dampingelement replacement procedure can be carried out with the bucket athand. ground level, where the shock-absorbing element is lighter andmore manageable, thus reducing the risk of a suspended load,facilitating maintenance work. Besides, This new design fully protectsthe drive mechanism (crowd crown), cushions impacts on the boom and itsdesign prevents impact on the cables of the blade.

UTILITY MODEL SUMMARY

The utility model refers to a damping element for a bucket of cableexcavator shovels, which cushions the eventual impacts or blows of thebucket on the boom of the excavator shovel, protecting its components.The damping element is installed on the bucket door supports,facilitating or favoring the replacement procedure, when said dampingelement is damaged or worn, facilitating bucket maintenance. Thelocation of the damping element in the bucket of the cable excavatorshovel favors the safety conditions in the mining work and duringreplacement operations, since said damping element is easily accessible,it reduces the risk of suspended load since the element shock absorberis lighter, making it easier to handle, and the replacement procedure iscarried out with the bucket at ground level, making it easier to handle.

In this way, this utility model provides a damping element for a bucketof cable excavator shovels that improves the protection conditions ofthe components of the excavator shovel and facilitates the replacementoperations of said damping element, favoring the safety of saidoperation. With the present damping element, it is possible to replaceit by mounting it from top to bottom, that is, the damping element ispreviously raised, to then be brought closer to the bucket and loweredto fix it on the bucket door, reducing the risk of a suspended load nearthe bucket. the operators.

The damping element comprises a metal base with arch guard-type rubberbumpers in which said damping element is welded to the bucket doorsupports.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 shows a schematic drawing that shows the arrangement of thedamping element in cable blades in the state of the art and the currentworking height.

FIG. 2 shows a perspective view of the damping element of the model.

FIG. 3 shows a form of the rubber piece that corresponds to a goaldefense.

FIG. 4 shows a section of one side of the damping element where theunion of the rubber parts with the metal base can be seen.

FIG. 5 shows a detail of FIG. 4 of the joint of the bolt that joins oneof the rubber pieces with the metal base.

FIG. 6A shows a rear perspective view of a bucket with a damping elementinstalled according to the utility model.

FIG. 6B shows a side view of a bucket and the position of the dampingelement when the bucket is in contact with the boom of the excavator.

FIG. 7 shows the passage of the push cables of the handle through anintermediate space in the damping element when the bucket contacts theboom of the excavator shovel.

FIG. 8 shows the location of the damping element, according to theutility model, installed in a bucket and the working height.

DETAILED DESCRIPTION OF THE UTILITY MODEL

The utility model refers to a damping element (1) for a bucket (2) witha door (4) of a cable excavator shovel, which prevents the blows orimpacts of said bucket (2) with a boom (3) of the rope excavator shovelduring its operation. The cable shovel includes push cables (6)connected to the bucket (2) to control its tilt.

FIG. 2 shows the damping element (1), according to a preferred modalityof the utility model, which comprises a metal base (9) and two rubberpieces (8) on said metal base (9), where said pieces rubber (8) areseparated by an intermediate space (7) defined by a central longitudinalrecess (12) of the metal base (9). The rubber pieces (8) can be of thearch guard type or sections or longitudinal pieces of a goal guard, asshown in FIG. 3 . The metal base (9) corresponds to an elongated elementthat is formed by the union of welded steel plates so that the dampingelement (1) is hollow inside and, therefore, lighter, also comprisingjoining surfaces (10) at each end. To fix the rubber pieces (8) in themetal base, side perforations (11) are included in said rubber pieces(8) and thread perforations (13) in the metal base (9) through whichbolts are fixed. (14) that go through the lateral perforations (11) ofthe rubber pieces (8) and are screwed into the perforations with thread(13) of the metal base (9), as shown in FIGS. 4 and 5 .

The damping element (1) is assembled by means of a welded connection tothe supports (5) of the door (4) of the bucket (2) of the cableexcavator shovel so that it is located in the upper part of the outersurface of said door. (4) as shown in FIG. 6A. The damping element (1)is joined by welding the joining surfaces (10) at each end of thedamping element (1) with the supports (5) of the door (4). In this way,when the bucket (2) approaches the boom (3) of the excavator shovel, thedamping element (1) comes into contact with said boom (3) before thestructure of the bucket (2), where the rubber parts (8) of the dampingelement (1) are in contact with the surface of the boom preventing thebucket from impacting and damaging the boom (3) during the operation ofthe cable excavator shovel, as described shown in FIG. 6B.

The intermediate space (7) that is formed in the metal base (9) by thecentral longitudinal recess (12), allows the push cables (6) of thebucket (2) to remain between the two rubber pieces (8), preventing saidpush cables (6) of the bucket (2) from being damaged during a possiblecollision between the bucket (2), the excavator shovel and its boom (3)when the push cables (6) remain trapped between the pieces the pen (3)and the bucket (2), as shown in FIG. 7 .

The damping element (1) being assembled by means of a welded connectionto the supports (5) of the door (4) of the bucket (2) allows thereplacement operation of the damping element (1) to be carried outresting the bucket (2) on the ground or surface, as shown in FIG. 8 , sothat the damping element is at a height (h) less than the height (H) ofthe configuration of the damping element (A) available in the prior art,where in addition, access to said damping element (1) is facilitated. Inthis way, the present utility model allows one or more operators to haveto work in an uncomfortable position and at a significant height thathas a greater risk and possibility of an accident when proceeding withthe replacement of a damping element. With the present damping element(1), it is possible to replace it by mounting it from top to bottom,that is, the damping element (1) is previously raised, to then bebrought closer to the bucket (2) and lowered to fix it on the door (4)of the bucket (2), reducing the risk of a suspended load near theoperators.

1. A damping element (1) for buckets (2) with door (4) of cableexcavator shovels to cushion shocks of the bucket (2) with a boom (3) ofthe excavator shovel, improving the protection of the components of saidexcavator shovel and facilitates the maintenance of the excavator,wherein includes: an elongated metal base (9), hollow inside, comprisingjoining surfaces (10) at each end to join the upper part of the door (4)of the bucket (2) and a central longitudinal recess (12) that defines anintermediate space (7); two rubber pieces (8) fixed to the metal base(9), said rubber pieces (8) being separated by the intermediate space(7) defined by said central longitudinal recess (12).
 2. The dampingelement (1) according to claim 1, wherein the metal base (9) is formedby the union of welded steel plates.
 3. The shock-absorbing element (1)according to claim 1, wherein the rubber parts (8) are of the arch guardtype or sections or longitudinal pieces of an arch guard.
 4. The dampingelement (1) according to claim 1, wherein the rubber pieces (8) arefixed to the metal base by means of bolts (14) that go through lateralperforations (11) included in said rubber pieces (8) and screwed intoholes with thread (13) included in the metal base (9).
 5. A bucket (2)with a door (4) for excavator shovels with a cable to absorb shocks fromthe bucket (2) with a boom (3) of the excavator shovel, improving theprotection of said excavator shovel components and facilitating themaintenance of the excavator shovel, wherein has a damping element (1)mounted, which includes: an elongated metal base (9), hollow inside,comprising joining surfaces (10) at each end and a central longitudinalrecess (12) defining an intermediate space (7); two rubber pieces (8)fixed to the metal base (9), said rubber pieces (8) being separated bythe intermediate space (7) defined by said central longitudinal recess(12); wherein the damping element (1) is assembled by joining thesupports (5) of the bucket door (2) located in the upper part of theouter surface of said door (4) with the joining surfaces (10) of themetallic base (9).
 6. The bucket (2) according to claim 5, wherein thejoint between the joining surfaces (10) and the supports (5) of the door(4) is a welded joint.
 7. The bucket (2) according to claim 5, whereinthe metal base (9) is formed by the union of welded steel plates.
 8. Thebucket (2) according to claim 5, wherein the rubber parts (8) are of thearch guard type or sections or longitudinal pieces of a goal guard. 9.The bucket (2) according to claim 5, wherein the rubber pieces (8) arefixed to the metal base by means of bolts (14) that go through lateralperforations (11) included in said rubber pieces (8) and is screwed intoholes with thread (13) included in the metal base (9).
 10. A cableshovel comprising a boom (3) having a bucket (2) connected with a door(4) and push cables (6) connected to the bucket (2) to control itsinclination, wherein the cable shovel It allows cushioning of the bucket(2) with the boom (3), improving the protection of the components ofsaid excavator shovel and facilitates its maintenance, wherein thebucket (2) has a damping element (1) mounted, which includes: anelongated metal base (9), hollow inside, comprising joining surfaces(10) at each end and a central longitudinal recess (12) defining anintermediate space (7); two rubber pieces (8) fixed to the metal base(9), said rubber pieces (8) being separated by the intermediate space(7) defined by said central longitudinal recess (12); where the dampingelement (1) is assembled by joining the supports (5) of the bucket door(2) located in the upper part of the outer surface of said door (4) withthe joining surfaces (10) of the metallic base (9), and where the pushcables (6) remain in the intermediate space (7) of the metal base andbetween the two rubber pieces (8).